Torpedo



.April 7, 1925.

A. FABRIZIO TORPEDO Filed NOV.' .25 1924 INVENTOR .dulliar'z W1 TNESSES pizzo H15 ATTORNEY Patented Apr. 7, 1925.

issassl I ACHILLO FABRIZIO, F ELZITON, MARYLAND.

Tonrnno.'

Application l'ed November 25, 1924. Serial No. 752,114.

To all whom it may concern:

Be it known that I, AoHrLLo FABRIZIO, a

n subject of the King of Italy, residing at Elkton, in the county of Cecil and State of '5 Maryland, have invented certain `new and.

useful Improvements in Torpedoes, of which the following is a specification.

My invention relates to torpedoes and more particularly to the casing enclosing the explosive material.

The objects are to provide a casing for enclosing explosive material which will be of practically uniform strength; which will be of simple and strong construction, and which may be quickly made at low cost. .y

These objects, and other advantageous \ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying ldrawings in whichi Figure `l is a central section through a torpedo constructed in accordance with my invention,

Figure 2 La fragmentary perspective view illustrating a. step in -the making of the torpedo casing, and

Figure 3 an enlarged central Section through one of the casing sections shown in Figure 1.

Referring to the drawings, 1 indicates the casing of a torpedo and 2 the explosive material therein. The casing consists of an inner cup 3 and an outer cup 4 of substantially equal length. Each of lthe cups is open at one end and closed at the other end by peening the edge 5 of the cylindrical wall to form a flange on which a disk 6 rests and to which it is glued yor otherwise secured.

The bent edge or ange 5 may be produced in various ways, such as by softening the end of apa er tube and pressing the' edges inward or y winding a strip of paper around the end of a mandrel and folding one edge ofthe strip over the end of the mandrel.

I prefer to use the latter method of forming the flangeas follows: A strip of paper 7, coated on one side with'adhesi've material, is wound around the end of a mandrel 8 in such manner that its edge 9 overhangs the end of the mandrel. This edge as the strip is wound, is folded over the end of the mandrel as shown at'10 in Figure 2. The

lfolded edge, becoming cramped as it nears the center of the mandrel, forms small tucks 11. The strip is Wound around the mandrel a suilicient numberl of times to make up a casing of the proper strength, after which the wound stri is removed from the mandrel.l The foldred edge 10 of the strip with 6o the small tucks 11 therein forms the flange 5. Disk 6 is then forced into the cup and glued to the flange. The disk and flange are compressed so that the small tucks 11 are practically unnoticeable, and the flange 5 becomes practically an integral part of the cup. The adhesive material-on the strip, being moistened, causes the wound' wrappings of lthe cup to stick to each other and form Va strong sidewall. The inner cup 3 is made 70 on a mandrel of smaller diameter than the outer cup 4 which fits over it. Each of the cups is made of practically the same length so that when the explosive material is placed on the inner cup and the outer cup slipped over it and glued or otherwise secured thereto, as shown in Figure 1, the cylindrical wall of the torpedo will be of a strength twice as great as either of its ends.

The casin above set forth may be used 8o with firewor s when a light and strong casing is required for enclosing an explosive.

While I have described my invention as taking a particular form, it will be understood that the various parts may be changed without de arting from the spirit thereof, and hence Ido not limit myself to the precise construction set forth', but consider that I am at liberty to make such changes and alterations as fairly come within the scope 9o of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patentisz- 1. A device of the character described including a pair of telescoping cups enclosing explosive material and having an inwardly extending flange, and a disk secured to thev inner side of the flange to form a bottomof the cup.

ZIA device of the character described in- In testirnony whereof I have signed my cluding a pair of telescoping cups enclosname to this specieation in the presence ing explosive material and having their V0f lWO SubSC-rlblng WltneSSeS.

side Walls made of a seriesof layers of strip ACHILLO- FABRIZIO. 5 material with one edge of the strip bent in- Witnesses:

wardly to provide a flange, and a disk se- Mozm B. BOULDEN,

cured to the inner side of the flange. RETA I. BORLAND. 

